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<table width="100%" summary="page for mfblong"><tr><td>mfblong</td><td style="text-align: right;">R Documentation</td></tr></table>

<h2>Example data for ACEnucfam</h2>

<h3>Description</h3>

<p>This is the companion data for ACEnucfam.
</p>


<h3>Usage</h3>

<pre>data(mfblong)</pre>


<h3>Format</h3>

<p>The data is a random subset of the birth weight data from the mental health registry of Norway.
</p>
<p>male-a dummy variable for being male; first-a dummy variable for being the first child; midage-a dummy variable for 
mother aged 20-35 at time of birth; highage-a dummy variable for mother older than 35 at time of birth and birthyr-year 
of birth minus 1967 (earliest birth year in birth registry).
</p>


<h3>Source</h3>

<p>The data were obtained from the Biometrics website and preprocessed with f.mfb.R.
</p>


<h3>References</h3>

<p>Rabe-Hesketh S, Skrondal A, Gjessing HK. Biometrical modeling of twin and family data using standard mixed model
software. Biometrics 2008, 64:280-288
</p>


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